toAscii: function()

in js/src/lib/idna.js [14:30]

• 14 lines of code
• 5 McCabe index (conditional complexity)

  toAscii: function(domain) {
    if (domain.substring(0, 4) === PUNYCODE_ENCODED_DOMAIN_PREFIX && !domain.match(validAsciiDomain)) {
      // Punycode encoded url cannot contain non ASCII characters
      return;
    }

    const labels = domain.split('.');
    for (let i = 0; i < labels.length; i++) {
      const label = labels[i];
      const punycodeEncodedLabel = punycode.toASCII(label);
      if (punycodeEncodedLabel.length < 1 || punycodeEncodedLabel.length > MAX_DOMAIN_LABEL_LENGTH) {
        // DNS label has invalid length
        return;
      }
    }
    return labels.join('.');
  }